I think some people still don’t get the point I am making so let me try again.
I have no problem whatsoever with disabled people like myself being prevented from sitting in emergency exit rows. It makes eminent sense on safety grounds and I would not trust myself in such instances.
If airlines did not sell exit rows for a premium (as used to be the case many years ago) then this would not be discrimination. Everybody is able buy seats without conditions and decisions on who sitts in the exit rows can be made on operational grounds.
However, when airlines sell such seats for a premium, they are offering an additional commercialised service i.e. get more space in return. When businesses sell services to the public, they are not allowed to discriminate directly or indirectly on the basis of gender, race, sexuality or disability.
if the airline, sold a mixture of extra leg room seats, some in the exit rows, others not in the exit rows (as happens in the USA), then that is fine since I can purchase an extra leg room seat that isn’t in an exit row.
If however, as happens in Europe, airlines sell only the exit rows as extra leg room seats then this is indirect discrimination disabled people. I am prevented from purchasing a service available to others who are not disabled just as a stadium would be guilty of indirect discrimination if it didn’t provide any female toilets.
I hope that makes my position clear to everyone!